I had a look at dependents. I see code in Object and Model which looks like quite close. And also the comment in Model says: Provides a superclass for classes that function as models. The only behavior provided is fast dependents maintenance, which bypasses the generic DependentsFields mechanism. 1/23/96 sw Is there a place where I can read more about that and/or can someone provide a quick explanation? TIA Phil On Thu, Aug 21, 2014 at 9:22 AM, Oscar Nierstrasz < oscar.nierstrasz@gmail.com> wrote:

Right. I should have realized that.

I was looking for a replacement for:

Transcript closeAllViews

which has disappeared in Pharo 3.0. So this seems to work:

(Transcript dependents select: #isSystemWindow) do: #close

Thanks, Oscar

On 20 Aug 2014, at 17:59 , Camille Teruel <camille.teruel@gmail.com> wrote:

...

Hi Oscar,

It's because Transcript is only one instance of ThreadSafeTranscript. 'Transcript open' doesn't create a new instance but opens a new window on that instance.

Camille

On 20 août 2014, at 17:30, Oscar Nierstrasz (gmail) < oscar.nierstrasz@gmail.com> wrote:

...

In the latest Pharo 3 for Mac:

Transcript open. Transcript open. Transcript class allInstances inspect

only shows one instance, not two.

Why?

Oscar

When we use an object and not a model the dependents are stored in a global dictionary or structure and our goal is to remove it :) Stef On 21/8/14 09:57, Thierry Goubier wrote:

2014-08-21 9:44 GMT+02:00 phil@highoctane.be <mailto:phil@highoctane.be> <phil@highoctane.be <mailto:phil@highoctane.be>>:

I had a look at dependents.

I see code in Object and Model which looks like quite close.

And also the comment in Model says: Provides a superclass for classes that function as models. The only behavior provided is fast dependents maintenance, which bypasses the generic DependentsFields mechanism. 1/23/96 sw

Is there a place where I can read more about that and/or can someone provide a quick explanation?

From memory and use of other smalltalks (VisualWorks): Model provides an instance variable for storing dependents (which are then non-weak), Object instances use a global, weak array.

At least, this is how I use them.

I allways have worries about discarding objects with dependencies (Morphs, models) and creating memory leaks that way.

Thierry

TIA Phil

On Thu, Aug 21, 2014 at 9:22 AM, Oscar Nierstrasz <oscar.nierstrasz@gmail.com <mailto:oscar.nierstrasz@gmail.com>> wrote:

Right. I should have realized that.

I was looking for a replacement for:

Transcript closeAllViews

which has disappeared in Pharo 3.0. So this seems to work:

(Transcript dependents select: #isSystemWindow) do: #close

Thanks, Oscar

On 20 Aug 2014, at 17:59 , Camille Teruel <camille.teruel@gmail.com <mailto:camille.teruel@gmail.com>> wrote:

> Hi Oscar, > > It's because Transcript is only one instance of ThreadSafeTranscript. > 'Transcript open' doesn't create a new instance but opens a new window on that instance. > > Camille > > On 20 août 2014, at 17:30, Oscar Nierstrasz (gmail) <oscar.nierstrasz@gmail.com <mailto:oscar.nierstrasz@gmail.com>> wrote: > >> >> In the latest Pharo 3 for Mac: >> >> Transcript open. >> Transcript open. >> Transcript class allInstances inspect >> >> only shows one instance, not two. >> >> Why? >> >> Oscar >> > >